<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <!-- 搜索框 添加按钮 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input v-model="queryInfo.query" @clear="getGoodsList" clearable placeholder="请输入内容">
            <el-button @click="getGoodsList" slot="append" icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="5">
          <el-button @click="goAddPage" type="primary">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 数据列表 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index" label=" # "></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="100px"></el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="150px">
          <template slot-scope="scope">
            <!-- 调用过滤器 -->
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column prop="" label="操作" width="120px">
          <!--  -->
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button @click="removeById(scope.row.goods_id)" type="danger" icon="el-icon-delete" size="mini"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
       :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]"
       :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
       :total="total" background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 指定查询条件
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      total: 0,
      // 接收查询到的商品列表信息
      goodslist: []
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    // 查询商品信息
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      console.log(res.data.goods)
      // this.$message.success('获取商品列表成功')
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 分页pagesize改变
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 分页pagenum改变
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 添加商品
    goAddPage () {
      // 跳转到添加页面
      this.$router.push('/goods/add')
    },
    // 删除商品
    async removeById (id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?', '提示',
        { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getGoodsList()
    }
  }
}
</script>

<style>
</style>
